Hortonworks, which already had a reseller relationship with Hewlett-Packard, now also has an investment from the IT giant. HP has invested $50 million in Hortonworks and HP’s CTO Martin Fink has joined the Hortonworks board.

Dueling Hadoop powers Hortonworks and Cloudera have traded news of big-name tech investors for the past year or so. Intel, Google Ventures and In-Q-tel are in the Cloudera camp. Yahoo and HP are on team Hortonworks. Both Hortonworks and Cloudera offer commercial versions and enhancement to Apache Hadoop.

Under a year-old pact, HP could already resell Hortonworks Data Platform to its customers.

In a statement, Hortonworks CEO Rob Bearden (pictured above) said the deal will “accelerate our joint customers’ transition to a modern data architecture.”